GROTHENDIECK'S LOCALIZATION PROBLEM
Luchezar L. Avramov and Hans-Bjorn Foxby
Abstract. The singularity of a fiber of a flat homomorphism of noetherian *
*rings ': R ! S at
a prime ideal p 2 SpecR is controlled by the singularity of the fiber of '*
* at any specialization
of p and by the singularities of the formal fibers of R at p.